International Day of Mathematics is annually celebrated on March 14. The day was recognised by the United Nations Educational, Scientific and Cultural Organization (UNESCO) during its general conference in 2019. Before this, the day was marked as Pi Day. The day was first celebrated in 1988 after Physicist Larry Shaw. The day is written in the MM/DD format so that it represents the value of Pi that is 3/14. Moreover, mathematician and physicist, Albert Einstein was also born on this date. The value of Pi was first calculated by a mathematician who was called Archimedes of Syracuse. However, the value was officially accepted by the scientific community only after Leonhard Euler came up with the symbol of Pi in 1737. In order to celebrate this day, math enthusiasts organise Pi recital competitions, Pi-Day-themed workshops etc. Many people also conduct sessions wherein they try to inculcate young students’ interest in mathematics by playing interactive games, worksheets, among other events. Many adults also take a keen interest in these workshops to keep their love for the subject alive. An international celebration of the day will be conducted on Sunday. People across the globe will be joining the event online. Organized by the International Mathematics Union, the event will include a mixture of virtual and face-to-face celebrations in 2021, including celebrations in classrooms.